package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.redisson.Redisson;
import org.redisson.api.RLock;
import org.redisson.api.RedissonClient;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.annotation.Resource;
import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantLock;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private RedissonClient redissonClient;

    @Resource(name = "orderRedisTemplate")
    private RedisTemplate<String, Object> orderRedisTemplate;

    @Autowired
    private WebSocketServer webSocketServer;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishInventoryMapper dishInventoryMapper;

    // 定义专用锁对象，仅用于库存校验和扣减的同步
    private final Object stockLock = new Object();

    /**
     * 用户下单
     * @param orderSubmitDTO
     * @return
     */
    @Override
    @Transactional
    public OrderSubmitVO submitOrder(OrdersSubmitDTO orderSubmitDTO) throws Exception {
        Long userId =BaseContext.getCurrentId();

        // 获取分布式锁，防止并发下单（键为"order:lock:用户ID"）
        RLock orderLock = redissonClient.getLock("order:lock:" + userId);
        boolean isLock = false;
        try {
            isLock= orderLock.tryLock(10, 15, TimeUnit.SECONDS);
            if(!isLock){
                throw new OrderBusinessException("下单请求处理中，请稍后再试");
            }
        //处理异常（地址簿为空，购物车数据为空）
        //查询当前用户地址簿信息是否为空
        AddressBook addressBook =addressBookMapper.getById(orderSubmitDTO.getAddressBookId());
        if(addressBook==null){
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }

        //查询当前用户的购物车数据

        ShoppingCart shoppingCart=new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList==null||shoppingCartList.size()==0){
            //抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }



        //1.向订单表插入一条数据
        Orders orders=new Orders();
        BeanUtils.copyProperties(orderSubmitDTO,orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
            //订单号，用时间戳生成
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);

        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList =new ArrayList<>();
        //2.向订单明显表插入N条数据
        for(ShoppingCart cart:shoppingCartList){
            OrderDetail orderDetail=new OrderDetail();//订单明细
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());
            orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetailList);

        //扣减库存


        // 用redis缓存订单，使用逻辑过期的方法来处理订单超时（结合Spring Task）
        //用订单号作为键
        // TODO 用RabbitMQ来缓存订单ID，来处理订单超时
        String Key="cacheovertime:order:"+orders.getNumber();
        RedisData redisData=new RedisData();
        redisData.setData(orders);
        redisData.setExpireTime(LocalDateTime.now());
        orderRedisTemplate.opsForValue().set(Key,redisData);



        //3.清空当前用户购物车
        shoppingCartMapper.deleteByUserId(userId);

        //封装VO返回结果
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .build();

        return orderSubmitVO;
        } finally {
            // 释放分布式锁
            if (isLock) {
                orderLock.unlock();
            }
        }
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    @Transactional
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {

        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);
        /*
        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }*/

        JSONObject jsonObject =new JSONObject();
        jsonObject.put("code","ORDERPAID");
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        //为替代微信支付成功后的数据库订单状态更新
        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付
        Integer OrderStatus = Orders.TO_BE_CONFIRMED;//订单状态，待接单

        //支付时间
        LocalDateTime check_out_time = LocalDateTime.now();

        //获取订单号码
        String orderNumber=ordersPaymentDTO.getOrderNumber();

        //根据订单编号查询订单id
        Orders order=orderMapper.getByNumber(orderNumber);

//        // TODO 判断redis的String Key="cacheovertime:order:"中是否还有对应的数据，有就先删除再判断是否时间超过15分钟了，
//        //  如果查询为null说明订单超时或者已被支付需要抛出异常
//        RedisData redisData = (RedisData) orderRedisTemplate.opsForValue().get("cacheovertime:order:" + orderNumber);
//        // 获取当前时间并减去15分钟
//        LocalDateTime nowMinus15Minutes = LocalDateTime.now().minusMinutes(15);
//        if(redisData==null){
//            //订单失效
//            throw new OrderBusinessException("支付失败！");
//        } else if (nowMinus15Minutes.isAfter(redisData.getExpireTime())) {
//            //订单失效
//            throw new OrderBusinessException("订单超时，支付失败！");
//        }else {
//            //说明有订单，可以进行订单支付
//            orderRedisTemplate.delete("cacheovertime:order:" + orderNumber);
//        }


        //菜品集合
        /*
        List<OrderDetail> dishs=orderDetailMapper.getDishIdNoNull(order.getId());

        //套餐集合
        List<OrderDetail> setmeals=orderDetailMapper.getSetMealIdNoNull(order.getId());


        //  扣减库存 如果有个菜品库存不足时，订单支付失败.
        //库存充足，扣减库存
        /* if(dishs.size()>0){
            for(OrderDetail dish:dishs){
                Integer stock = dishInventoryMapper.selectByDishId(dish);
                if(dish.getNumber()>stock){
                    //库存不足
                }
            }
        }
        if(setmeals.size()>0){

        }
        //先统计套餐和菜品的所需量，再拿去跟数据库比较。
        Map<Long,Integer> dishCountMap=new HashMap<>();

        //处理套餐中的菜品份数
        if(setmeals != null && setmeals.size()>0){
            for(OrderDetail setmeal:setmeals){
                //拿到套菜id和数量
                Long setmealId = setmeal.getSetmealId();
                Integer setmealNumber = setmeal.getNumber(); // 套餐总数量

                // 查询该套餐包含的菜品列表
                List<SetmealDish> list=setmealDishMapper.getSetmealDishBysetmealId(setmealId);

                if(list!=null&&list.size()>0){
                    for(SetmealDish setmealDish:list){
                        // 计算该菜品的总需求量：套餐数量 × 单份套餐含有的菜品份数
                        Integer totalDishNumber = setmealNumber * setmealDish.getCopies();
                        dishCountMap.merge(
                                setmealDish.getDishId(),  // key：菜品ID
                                totalDishNumber,  // value：当前数量
                                Integer::sum       // 合并函数：旧值 + 新值
                        );
                    }
                }

            }
        }
        //处理菜品份数
        if(dishs != null && dishs.size()>0){
            for(OrderDetail dish:dishs){
                dishCountMap.merge(
                        dish.getDishId(),  // key：菜品ID
                        dish.getNumber(),  // value：当前数量
                        Integer::sum       // 合并函数：旧值 + 新值
                );
            }
        }*/
        Map<Long, Integer> dishCountMap = getAcount(order.getId());

        //校验库存是否充足
        /*synchronized (stockLock) {
            hasEnoughStock = checkAndDeductStock(dishCountMap);
        }*/
        //分布式锁实现
        /*RLock stocklock1 = redissonClient.getLock("stocklock");
        boolean isLock = stocklock1.tryLock(10, 15, TimeUnit.SECONDS);*/
        boolean hasEnoughStock = checkAndDeductStock(dishCountMap);



        if (!hasEnoughStock) {
            //扣减失败
            throw new OrderBusinessException("库存不足，订单支付失败");
        }else{
            //扣减成功
            log.info("调用updateStatus,用于替换微信支付更新数据库状态的问题");
            orderMapper.updateStatus(OrderStatus,OrderPaidStatus,check_out_time,orderNumber);

            // 删除缓存该订单的判断超时缓存
            String Key="cacheovertime:order:"+orderNumber;
            orderRedisTemplate.delete(Key);


            //websocket向客户端浏览器推送消息
            Map map=new HashMap();
            map.put("type",1);//1表示来单提醒 2表示客户催单
            map.put("orderId",order.getId());
            map.put("content","订单号："+orderNumber);

            String json=JSONObject.toJSONString(map);
            webSocketServer.sendToAllClient(json);

            return vo;
        }
    }

    //合并菜品数量
    private Map<Long,Integer> getAcount(Long orderId){
        List<OrderDetail> dishs=orderDetailMapper.getDishIdNoNull(orderId);

        //套餐集合
        List<OrderDetail> setmeals=orderDetailMapper.getSetMealIdNoNull(orderId);


        //  扣减库存 如果有个菜品库存不足时，订单支付失败.
        //库存充足，扣减库存
        /* if(dishs.size()>0){
            for(OrderDetail dish:dishs){
                Integer stock = dishInventoryMapper.selectByDishId(dish);
                if(dish.getNumber()>stock){
                    //库存不足
                }
            }
        }
        if(setmeals.size()>0){

        }*/
        //先统计套餐和菜品的所需量，再拿去跟数据库比较。
        Map<Long,Integer> dishCountMap=new HashMap<>();

        //处理套餐中的菜品份数
        if(setmeals != null && setmeals.size()>0){
            for(OrderDetail setmeal:setmeals){
                //拿到套菜id和数量
                Long setmealId = setmeal.getSetmealId();
                Integer setmealNumber = setmeal.getNumber(); // 套餐总数量

                // 查询该套餐包含的菜品列表
                List<SetmealDish> list=setmealDishMapper.getSetmealDishBysetmealId(setmealId);

                if(list!=null&&list.size()>0){
                    for(SetmealDish setmealDish:list){
                        // 计算该菜品的总需求量：套餐数量 × 单份套餐含有的菜品份数
                        Integer totalDishNumber = setmealNumber * setmealDish.getCopies();
                        dishCountMap.merge(
                                setmealDish.getDishId(),  // key：菜品ID
                                totalDishNumber,  // value：当前数量
                                Integer::sum       // 合并函数：旧值 + 新值
                        );
                    }
                }

            }
        }
        //处理菜品份数
        if(dishs != null && dishs.size()>0){
            for(OrderDetail dish:dishs){
                dishCountMap.merge(
                        dish.getDishId(),  // key：菜品ID
                        dish.getNumber(),  // value：当前数量
                        Integer::sum       // 合并函数：旧值 + 新值
                );
            }
        }
        return dishCountMap;
    }


    //校验库存
    private boolean checkAndDeductStock(Map<Long, Integer> dishCountMap) throws InterruptedException {

        if(dishCountMap==null){
            return false;
        }
        //先校验库存
       /* for (Map.Entry<Long, Integer> entry : dishCountMap.entrySet()) {
            int requiredNum = entry.getValue(); // 该菜品需要扣减的数量
            int stock=dishInventoryMapper.getStock(entry.getKey());
            if(requiredNum>stock){
                //库存不足
                return false;
            }
        }*/

        // 遍历所有需要扣减的菜品（key：菜品ID，value：所需数量）
        for (Map.Entry<Long, Integer> entry : dishCountMap.entrySet()) {
            Long dishId = entry.getKey();       // 当前需要处理的菜品ID
            Integer requiredNum = entry.getValue(); // 该菜品需要扣减的数量
            //加分布式锁锁住该菜品
            RLock stocklock1 = redissonClient.getLock("stocklock:pay:"+dishId);
            boolean isLock = stocklock1.tryLock(10, 15, TimeUnit.SECONDS);
            if(isLock) {
                try {
                    // 调用Mapper的reduceStock方法,执行扣减库存
                    int rows = dishInventoryMapper.reduceStock(dishId, requiredNum);

                    // 判断扣减是否成功
                    if (rows <= 0) {
                        // 若影响行数≤0，说明扣减失败（库存不足或并发冲突）
                        //释放锁
                        stocklock1.unlock();
                        return false;
                    }
                } finally {
                    //释放锁
                    stocklock1.unlock();
                }

            }
        }
        // 所有菜品扣减成功，返回true
        return true;
    }

    //校验库存redis版
    /*private boolean checkAndDeductStock(Map<Long, Integer> dishCountMap) {
        if (dishCountMap.isEmpty()) {
            return false;
        }

        // 1. 先检查Redis中的库存是否充足
        for (Map.Entry<Long, Integer> entry : dishCountMap.entrySet()) {
            String redisKey = "dish:stock:" + entry.getKey();
            Integer redisStock = (Integer) redisTemplate.opsForValue().get(redisKey);

            // 如果Redis中没有缓存，从数据库加载
            if (redisStock == null) {
                Integer dbStock = dishInventoryMapper.getStock(entry.getKey());
                if (dbStock == null) return false; // 菜品不存在

                redisTemplate.opsForValue().set(redisKey, dbStock, 1, TimeUnit.HOURS);
                redisStock = dbStock;
            }

            if (redisStock < entry.getValue()) {
                return false; // 库存不足
            }
        }

        // 2. Redis预扣减（原子操作）
        for (Map.Entry<Long, Integer> entry : dishCountMap.entrySet()) {
            String redisKey = "dish:stock:" + entry.getKey();
            Long remaining = redisTemplate.opsForValue().decrement(redisKey, entry.getValue());

            if (remaining < 0) {
                // 回滚之前的扣减
                rollbackRedisDeduction(dishCountMap, entry.getKey());
                return false;
            }
        }

        // 3. 异步更新数据库
        asyncUpdateDatabase(dishCountMap);

        return true;
    }

    @Async
    protected void asyncUpdateDatabase(Map<Long, Integer> dishCountMap) {
        try {
            // 这里使用批量更新提高效率
            for (Map.Entry<Long, Integer> entry : dishCountMap.entrySet()) {
                int rows = dishInventoryMapper.reduceStock(entry.getKey(), entry.getValue());
                if (rows <= 0) {
                    // 数据库扣减失败，回滚Redis
                    redisTemplate.opsForValue().increment(
                            "dish:stock:" + entry.getKey(),
                            entry.getValue()
                    );
                    // 可以记录日志或发送告警
                }
            }
        } catch (Exception e) {
            // 异常时回滚所有Redis操作
            rollbackRedisDeduction(dishCountMap, null);
        }
    }

    private void rollbackRedisDeduction(Map<Long, Integer> dishCountMap, Long excludeDishId) {
        for (Map.Entry<Long, Integer> entry : dishCountMap.entrySet()) {
            if (excludeDishId == null || !entry.getKey().equals(excludeDishId)) {
                redisTemplate.opsForValue().increment(
                        "dish:stock:" + entry.getKey(),
                        entry.getValue()
                );
            }
        }
    }*/

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
    }

    /**
     * 用户端分页查询
     * @param pageNum
     * @param pageSize
     * @param status
     * @return
     */
    @Override
    public PageResult pageQueryByUser(int pageNum, int pageSize, Integer status) {
        //设置分页
        PageHelper.startPage(pageNum,pageSize);

        Long userId = BaseContext.getCurrentId();
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setStatus(status);
        ordersPageQueryDTO.setUserId(userId);

        //分页条件查询
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        List<OrderVO> orderVOList =new ArrayList<>();

        //查询出订单明细，封装进OrderVO
        if(page!=null&&page.getTotal()>0){
            for(Orders order:page){
                //获取订单id
                Long orderId = order.getId();

                //查询订单明细（根据订单id）
                List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orderId);

                //封装到OrderVO
                OrderVO orderVO = new OrderVO();
                //OrderVO继承了Orders
                BeanUtils.copyProperties(order,orderVO);
                orderVO.setOrderDetailList(orderDetailList);
                orderVOList.add(orderVO);
            }
        }

        return new PageResult(page.getTotal(),orderVOList);
    }

    /**
     * 查询订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {

        //1.根据id查找该订单
        Orders order=orderMapper.getByOrderId(id);
        //2.根据id查找订单明细
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        //3.封装OrderVO（缺少地址信息）
        AddressBook addressBook=addressBookMapper.getById(order.getAddressBookId());
        String address=addressBook.getDistrictName()+addressBook.getDetail();
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(order,orderVO);
        orderVO.setAddress(address);
        orderVO.setOrderDetailList(orderDetailList);
        return orderVO;
    }

    /**
     * 用户取消订单
     * @param id
     * @throws Exception
     */
    @Override
    public void userCancelById(Long id) throws Exception {
        //查询订单，是否存在
        Orders orderDB=orderMapper.getByOrderId(id);

        if(orderDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }

        //订单状态
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (orderDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(orderDB.getId());

       /* // 订单处于待接单状态下取消，需要进行退款
        if (orderDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //调用微信支付退款接口
            weChatPayUtil.refund(
                    orderDB.getNumber(), //商户订单号
                    orderDB.getNumber(), //商户退款单号
                    new BigDecimal(0.01),//退款金额，单位 元
                    new BigDecimal(0.01));//原订单金额

            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }*/

        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }


    /**
     * 再来一单
     * @param id
     */
    @Override
    public void repetition(Long id) {
        //查询当前用户id
        Long userId = BaseContext.getCurrentId();
        // 根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        //将OrderDetail转化为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(a -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(a, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;
        }).collect(Collectors.toList());

        //购物车数据批量插入
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    /**
     * 管理端-订单搜索
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        // 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);

        return new PageResult(page.getTotal(), orderVOList);

    }

    /**
     * 管理端-统计各个状态的订单数量统计
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        // 根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        //封装到OrderStatisticsVO中
        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
        orderStatisticsVO.setConfirmed(confirmed);
        orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);

        return orderStatisticsVO;
    }

    /**
     * 管理端-接单
     * @param ordersConfirmDTO
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        //1.修改订单状态为已接单：3
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 管理端-拒单
     * @param ordersRejectionDTO
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getByOrderId(ordersRejectionDTO.getId());

        // 订单只有存在且状态为2（待接单）才可以拒单
        if (ordersDB == null || !ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.CANCELLED)
                .rejectionReason(ordersRejectionDTO.getRejectionReason())
                .cancelReason("拒绝出单")
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 管理端-取消订单
     * @param ordersCancelDTO
     */
    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getByOrderId(ordersCancelDTO.getId());
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.CANCELLED)
                .cancelReason(ordersCancelDTO.getCancelReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 管理端-订单派送
     * @param id
     */
    @Override
    public void delivery(Long id) {
        //根据id查询订单
        Orders orderDB = orderMapper.getByOrderId(id);
        // 校验订单是否存在，并且状态为3
        if (orderDB == null || !orderDB.getStatus().equals(Orders.CONFIRMED)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = Orders.builder()
                .id(orderDB.getId())
                .status(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 完成订单
     *
     * @param id
     */
    public void complete(Long id) {
        // 根据id查询订单
        Orders orderDB = orderMapper.getByOrderId(id);

        // 校验订单是否存在，并且状态为4
        if (orderDB == null || !orderDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS)) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Orders orders = new Orders();
        orders.setId(orderDB.getId());
        // 更新订单状态,状态转为完成
        orders.setStatus(Orders.COMPLETED);
        orders.setDeliveryTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    /**
     * 客户催单
     * @param id
     */
    @Override
    public void reminder(Long id) {
        //根据id查询订单
        Orders orderDB = orderMapper.getByOrderId(id);
        //判断订单是否存在
        if(orderDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }

        Map map=new HashMap();
        map.put("type",2);//1.来单提醒 2.用户催单
        map.put("orderId",orderDB.getId());
        map.put("content","订单号："+orderDB.getNumber());


        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }


    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();

        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                //复制地址
                AddressBook addressBook=addressBookMapper.getById(orders.getAddressBookId());
                String address=addressBook.getDistrictName()+addressBook.getDetail();
                orderVO.setAddress(address);
                String orderDishes = getOrderDishesStr(orders);

                // 将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

}
